Home / 858,311.10-1,288,049.85-479,231.10

Finding the Fourth Proportional to 858,311.10, 1,288,049.85 and 479,231.10

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Solution

The fourth proportional to 858,311.10, 1,288,049.85 and 479,231.10 is: 719,172.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,311.10 : 1,288,049.85 = 479,231.10 : x
  2. Step 2: Convert to fraction form
    858,311.10/1,288,049.85 = 479,231.10/x
  3. Step 3: Cross multiply
    858,311.10x = 1,288,049.85 × 479,231.10
  4. Step 4: Simplify right side
    858,311.10x = 617,273,546,470.34
  5. Step 5: Solve for x
    x = 617,273,546,470.34/858,311.10
  6. Step 6: Final answer
    x = 719,172.28

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.